shrub/pkg/arvo/lib/dbug.hoon
Fang c109111ff9
dbug: attempt to scry for state
If the underlying app implements a /x/dbug/state endpoint in +on-peek,
dbug will now use that for %state evaluation. Falls back to the vase
provided by +on-save if the peek fails.

This allows apps and (perhaps more usefully) wrapper agents to provide
customized vases to /lib/dbug.

Updates /lib/shoe to make use of this, properly prepending the wrapped
app's vase to shoe's own, instead of including it as-is.
2020-09-07 15:55:45 +02:00

156 lines
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:: dbug: agent wrapper for generic debugging tools
::
:: usage: %-(agent:dbug your-agent)
::
|%
+$ poke
$% [%bowl ~]
[%state grab=cord]
[%incoming =about]
[%outgoing =about]
==
::
+$ about
$@ ~
$% [%ship =ship]
[%path =path]
[%wire =wire]
[%term =term]
==
::
++ agent
|= =agent:gall
^- agent:gall
!.
|_ =bowl:gall
+* this .
ag ~(. agent bowl)
::
++ on-poke
|= [=mark =vase]
^- (quip card:agent:gall agent:gall)
?. ?=(%dbug mark)
=^ cards agent (on-poke:ag mark vase)
[cards this]
=/ dbug
!<(poke vase)
=; =tang
((%*(. slog pri 1) tang) [~ this])
?- -.dbug
%bowl [(sell !>(bowl))]~
::
%state
=? grab.dbug =('' grab.dbug) '-'
=; product=^vase
[(sell product)]~
=/ state=^vase
:: if the underlying app has implemented a /dbug/state scry endpoint,
:: use that vase in place of +on-save's.
::
=/ result=(each ^vase tang)
(mule |.(q:(need (need (on-peek:ag /x/dbug/state)))))
?:(?=(%& -.result) p.result on-save:ag)
%+ slap
(slop state !>([bowl=bowl ..zuse]))
(ream grab.dbug)
::
%incoming
=; =tang
?^ tang tang
[%leaf "no matching subscriptions"]~
%+ murn
%+ sort ~(tap by sup.bowl)
|= [[* a=[=ship =path]] [* b=[=ship =path]]]
(aor [path ship]:a [path ship]:b)
|= [=duct [=ship =path]]
^- (unit tank)
=; relevant=?
?. relevant ~
`>[path=path from=ship duct=duct]<
?: ?=(~ about.dbug) &
?- -.about.dbug
%ship =(ship ship.about.dbug)
%path ?=(^ (find path.about.dbug path))
%wire %+ lien duct
|=(=wire ?=(^ (find wire.about.dbug wire)))
%term !!
==
::
%outgoing
=; =tang
?^ tang tang
[%leaf "no matching subscriptions"]~
%+ murn
%+ sort ~(tap by wex.bowl)
|= [[[a=wire *] *] [[b=wire *] *]]
(aor a b)
|= [[=wire =ship =term] [acked=? =path]]
^- (unit tank)
=; relevant=?
?. relevant ~
`>[wire=wire agnt=[ship term] path=path ackd=acked]<
?: ?=(~ about.dbug) &
?- -.about.dbug
%ship =(ship ship.about.dbug)
%path ?=(^ (find path.about.dbug path))
%wire ?=(^ (find wire.about.dbug wire))
%term =(term term.about.dbug)
==
==
::
++ on-peek
|= =path
^- (unit (unit cage))
?. ?=([@ %dbug *] path)
(on-peek:ag path)
?+ path [~ ~]
[%u %dbug ~] ``noun+!>(&)
[%x %dbug %state ~] ``noun+!>(on-save:ag)
[%x %dbug %subscriptions ~] ``noun+!>([wex sup]:bowl)
==
::
++ on-init
^- (quip card:agent:gall agent:gall)
=^ cards agent on-init:ag
[cards this]
::
++ on-save on-save:ag
::
++ on-load
|= old-state=vase
^- (quip card:agent:gall agent:gall)
=^ cards agent (on-load:ag old-state)
[cards this]
::
++ on-watch
|= =path
^- (quip card:agent:gall agent:gall)
=^ cards agent (on-watch:ag path)
[cards this]
::
++ on-leave
|= =path
^- (quip card:agent:gall agent:gall)
=^ cards agent (on-leave:ag path)
[cards this]
::
++ on-agent
|= [=wire =sign:agent:gall]
^- (quip card:agent:gall agent:gall)
=^ cards agent (on-agent:ag wire sign)
[cards this]
::
++ on-arvo
|= [=wire =sign-arvo]
^- (quip card:agent:gall agent:gall)
=^ cards agent (on-arvo:ag wire sign-arvo)
[cards this]
::
++ on-fail
|= [=term =tang]
^- (quip card:agent:gall agent:gall)
=^ cards agent (on-fail:ag term tang)
[cards this]
--
--